With PastBook, you can create a photo book importing the pictures directly from the Google Photos library, there is no need to download them to your hard drive!
You can start creating your book if you click here. Click on "Pick your Photos" button and connect to your google account! Once connected you will be able to select the pictures. If you want to select the whole album just click on the circle button. Once you've selected all the photos you can proceed with the creation of your book!